Interlocking and function control



Aug. 19, 1952 R. E. BOYDEN ETAL 2,507,526

' INTERLOCKING AND FUNCTION CONTROL DEVICE Filed July 12, 1948 9 Sheets-Sheet 1 E I [5-1L INVENTORS P051507 E 50 YDEN BY Hounuo Hf [15M A TTOPNEY Aug. 19,1952

R. E. BOYDEN ET AL INTERLOCKING AND FUNCTION CONTROL DEVICE 9 Sheets-Sheet 2 Filed July 12, 1948 N mmm m Y r. Y mflwf E F wt w m mHrm IWW MMWA am w I I 1 1 i l I -I R xv QM MHM 19, 1952 R. E. BOYDEN ETAL 2,607,526

INTERLOCKING AND FUNCTION CONTROL DEVICE Filed July 12, 1948 9 Sheets-Sheet 3 Power 5 Bows/v BY Hon/W0 HI 5: n

A TTOPNE Y Aug. 19, 1952 Filed July 12, 1948 R. E. BOYDEN ET AL INTERLOCKING AND FUNCTION CONTROL DEVICE 9 Sheets-Sheet 5 INVEN 10125 4 05527 If. 50 mm BY HmmA j/fZ/Zw AM X1? 1,; 4

ATTsVF/WTY g- 1952 R. E. BOYDEN ETAL 2,607,526

INTERLOCKING AND FUNCTION CONTROL DEVICE Filed July 12, 1948 9 Sheets-$heet 6 A TTQQNEY Aug. 19, 1952 R. E. BOYDEN ETAL INTERLOCKING AND FUNCTION CONTROL DEVICE 9 Sheets-Sheet '7 Filed July 12, 1948 QILWWH .IH

INVENTORS Poet-97' 5 50mm BY Hana/V071:

/A rrokNEY I I H- r av: mi ii i. 5:12.04. a l filii Aug. 19, 1952 R. E. BOYDEN m'AL INTERLOCKING AND FUNCTION CONTROL DEVICE 9 Sheets-Sheet 8 Filed July 12, 1948 -NH mam [\NVENTORS M N w WWW r w wfl w H W w T A g- 1952 R. E. BOYDEN ETAL 2,607,526

INTERLOCKING AND FUNCTION CONTROL DEVICE Filed July 12, 1948 9 Sheets-Sheet 9 4 A :4 2/8 2/9 f36/w Z2 h 22/ 21/ 2/2 5 FIE 1E i i INVENTOR. Poet-21f Bows/v 5 BY HoLLMloy ea-uzlv ATTOPNEY l atentecl Aug. 19 1952- INTERLOCKING AND FUNCTION CONTROL DEVICE Robert E. Boyden, Los Angeles, and Holland H. Freeman, Arcadia, Calif., assignors to Clary Multiplier Corporation, Los Angeles, Calif., a corporation of California Application July 12, 1948, Serial No. 38,294

12 Claims.

This invention relates to keyset, power driven, cash registering machines and has for its principal object the provision of an improved machine of this type. However, certain features of the invention are applicable to machines of types other than that disclosed herein.

Another object of the invention is to facilitate use of the machine selectively as an adding machine and as a cash register.

Another object is to provide a single manipulatable control for selectively conditioning the machine to operate as an adding machine and as a cash register and to both look and unlock the cash drawer and other parts of the machine.

Another object is to provide an improved enforced designation control mechanism for requiring proper entry of certain factors in the machine.

Another object is to provide an enforced designation mechanism which is automatically effective when the machine is conditioned for use as a cash register and is ineffective when the machine is conditioned for use as an adding machine.

Another object is to prevent misoperation of the machine either accidently or by purpose.

Another object is to selectively prevent operation of the machine when the cash register is in an open position.

Another object is to prevent unauthorized opening, tampering, or dismantling of the machine.

The manner in which the above and other objects of the invention are accomplished will be readily understood on reference to the following specification when read in conjunction with the accompanying drawings wherein: r

Fig. 1 is a plan view of the cash registering machine. 7

Figs. 2 and 3 are co-extensive longitudinal sectional veiws of the machine.

Fig. 2A is a sectional view taken along line 2A-2A of Fig. 2.

I Fig. 4 is a transverse sectional view and is taken substantially along the line 4-4 of Fig. 2.

Fig. 5 is a sectional plan view taken substantially along the line 5--.-5 of Fig. 3, showing the drawer release latch mechanism and controls therefor.

Fig. 6 is a transverse sectional view taken substantially along the line 66 of Fig. 3 showing the drawer release latch mechanism.

Fig. '7 is a sectional plan view taken along the line l-l of Fig. 3 illustrating the drawer actuating means.

Fig. 8 is a sectional View taken along the line 8-48 of Fig. 3 illustrating the paper take-up reel.

Fig. 9 is a sectional elevational view taken substantially along the line 99 of Fig. 1 showing part of the machine conditioning controls and part of the resilient mounting for the machine cover.

Fig. 10 is a fragmentary sectional plan view taken along the line iii-l8 of Fig. 9 illustrating the lock for the machine conditioning controls.

Fig. 11 is a sectional elevational View of the clutch controls and the means for rendering the same effective and ineffective.

Fig. 12 is a plan view illustrating certain of the mechanism shown in Fig. 11 and is taken in the direction of the arrow [2 of that figure.

Fig. 12A is a detail view of a coupling pin for the clutch control slide blocking levers.

Figs. 13 and 14 are detailed plan views of certain of the elementsshown in Figs. 11 and 12.

Fig. 15 is a sectional side elevational view of a portion of the machine illustrating a transparent printer opening cover attached therein.

Fig. 16 is an end View partly in section of the printer opening cover.

Fig. 17 is a sectional side elevation of the cash drawer controlled blocking lever for the clutch control mechanism.

The particular embodiment of the invention disclosed herein is applied to the well known and commercially available Clary adding machine disclosed and claimed in the copending application of R. E. Boyden, Serial Number 582,553, filed March 13, 1945, now Patent No. 2,583,810, issued January 29, 1952. The accumulator of said machine is disclosed and claimed in the copending application of E. P. Drake, Serial Number 582,554, filed March 13, 1945, and since matured into Patent No. 2,472,696, issued on June '7, 1949. Therefore, only those parts of said machine which intimately relate to the present invention will be disclosed herein and reference may be had to said applications for disclosure of details not disclosed herein.

All elements indicated herein by reference numerals accompanied by the letter a identify similarly numbered elements disclosed in said application hereinabove referred to.

The machine comprises, in general, a computing section enclosed by a cover or housing part 3-Bla, and a cash drawer section, including a cash drawer l l, enclosed by a cover 12 underlying the computing section.

A paper strip indicated by dot and dash lines IS, on which the Various items entered in the machine and totalled out thereof are recorded, is passed over a platen [2a to a position wherein such items are visible and is then fed under a 3 cover or housing part H3 extending between the covers 361a and I2.

The machine is adapted to be selectively set into different operating conditions by a settable knob l4 movable to anyof five difierentpositions and adapted to be locked in any four thereof by a key actuated lock 15.

The machine is controlled by a keyboard comprising amount keys 9a upon which items to be entered in the machine are set. The two left hand rows 16 and I! of amount keys are provided for designation purposes only and items settherein are subsequently printed as symbols but are not accumulated. 7

Add bars Illa. and Ila are provided to cause the machine to additively enter items set up on the keys 90!. into the accumulator and to print such items on the paper strip [3. A minus bar [3a is provided to subtract items entered in the keys So from the accumulator. This bar acts as a paid out control bar when the machine is operated as a cash register. A non-add bar [40. is provided to print items only and this bar acts as a charge bar when the machine is operated as a cash register. Total and sub-total bar s Ila and lBa, respectively, are provided to total or sub-total items from the accumulator when the machine is operating in certain conditions.

If it is desired to add the same amount in the accumulator two or more times, a repeat bar l5a is depressedand held down until the requisite number of additions are made and if it is desired to subtract the same amount a number of times, the bar [3a and repeat bar I50 are simultaneously depressed and the latter is thereafter held down the requisite number of times causing a like number of 'subtractions to occur.

A correction bar [6a is provided to release any of the keys 9a which may be depressed, without starting the motor.

Setting of the control conditioning knob l4 into its foremost lock position permits depression of any of the keys or bars in the keyboard but renders the same ineffective to cause operation of the machine and consequent entry of items therein and also looks the various parts against unauthorized entry, opening of the drawer, or dismantling of any of the parts.

Upon setting the knob to its illustrated cash position, means controlled thereby will allow operation of the control bars except bars Ila and l8a. In this condition of the machine, the cash drawer II will be automatically released on each operation of the machine.

Setting of the control knob [4 into its add position enables control of the machine by all ofthe control bars but prevents release of the cash drawer and also prevents removal of the rear cover H3. I I

Movement of the knob 14 to open position enables control of the machine by any of the control bars and also causes the cash drawer to automatically open during each operation. of the machine. Further, the rear cover I I3 is unlatched, enabling its removal for the purpose of removing or replacing the paper tape 13. I

Movement of the knob 14 to drawer position directly causes release of the cash drawer H and release of the rear cover H3 in the event it is desired to gain access to the cash drawer or the machine when the current supply is unavailable or when the machine becomes inoperative.

The motor driven computing mechanism housed in the cover 36la is supported by a frame comprising two main side frame plates 23a and 24a (Figs. 3 and 4) rigidly secured in spaced relation by cross braces 20, 364a and 365a (Figs. 2, 3 and 4). This frame and the mechanism carried thereby is resiliently supported upon a tray 2| integral with the drawer cover l2 through four resilient supporting units 22. Each of said units comprises a body of rubber or the like having a circumferential groove 23 therein fitted into a circular hole in the cross brace 364a or 365a. The body 22 is held in position upon the tray by a screw 24 extending through the latter and threadably mounted in a bushing 25 fitted within the body.

, The drawer cover l2 which supports the computing mechanism is, in turn, resiliently supported. A pair of cross braces 26 and 26' (Figs. 2 and 3) are rigidly secured to the sides. of the cover I2 below the cash drawer ll and are supported by four feet 21 of vibration absorbing material.

The computing mechanism cover 36la is resiliently supported by the main frame plate through vibration absorbing mounts 389a (Fig. 9) of rubber or the like mounted on brackets 310a and 311a suitably secured to the frame plates 23a and 24a in a manner not shown.

Means are provided to releasably lock the cover 36hr in place and comprises lock levers 28 (Figs. 4 and 9) on opposite sides of the machine. The levers are pivoted at 30 to brackets extending upward from the tray 2|. Each locking lever, when in. its illustrated locking position, as shown in Fig. 9, is located with an arcuate portion 3| extending intoa slot 32 formed in a rib 33 extending from the wall of the cover. The lever is unlocked by pressing on a tail portion 34 to rock the lever counter-clockwise out of engagement with the slot 32. It will be noted that the lock levers 28 are accessible only from within the cash drawer cover and only when the cash drawer H is removed, thus preventing unauthorized entrance into the computing section when the drawer H is locked in closed position. I

From the foregoing itwill be seenthat the computing machine and cash drawer mechanism are insulated from each other to reduce the tendency of vibration emanating from one to be transmitted to the other or to the supporting surface.

As disclosed in the aforementioned R. E. Boyden application S. N. 582,553, the computing mechanism is motor driven and includes a cyclic clutch 510. (Fig. 11), the driven side of which is 'operatively connected to the motor (not shown) and the driving side is secured to a rotatable shaft 51a. Each rotation of the shaft causes. a cycle of operation of the machine in accordance with the particular control bar depressed and the item entered or the total taken from the accumulator is printed on the paper strip l3 (Figs. 1 and3) at a point where the latter passes overthe platen [2a.

The clutch 51a is engaged by rockinga clutch control dog 58a about its pivotal support 59a out of contact with the clutch. However, the dog is normally held in its illustrated clutch disengaging position by a tension spring 35 extending between the dog andthe machine frame.

Means are provided for normally causing 'engagement of the clutch upon depression of any of the motor control bars and comprises a slide 36 having a slot therein embracing a stud 221a on the dog 58a. The slide is guided for lengthwise movement by guide studs 38 mounted on the frame plate 24a (see Fig. 12) and extending through guide slots 37 in the slide. The slide 36 is resiliently connected to a cam slide 39 having guide slots 40 also slidably embracing the guide studs 38. For this purpose, a tension spring 4| is attached at one end thereof to a stud extending from the slide 36 and at the other end thereof to a stud 42 extending from the slide 39. The spring 4| normally holds the stud 42 in engagement with the forward end of the slide 36 whereby both slides will move as a unit. The spring 4| is stronger than the spring 35 and, consequently, when the slide 39 is moved forward the slide 36 will follow to cause engagement of the clutch unless restrained from such movement in a manner to be described hereinafter.

The slide 39 has four inclined cam slots 43, each cooperating with a pin 232a extending from a link 233a pivoted on a frame stud 233a. Each link is normally held in its illustrated position by a spring 235a extending between the pin 232a and a frame stud. Also, each pin underlies the stem of one of the group of control bars l3a, Ma, Ila and Illa, whereby depression of any of said control bars will actuate the slide 39 and, consequently, normally cause engagement of the clutch. The slide 39 is also actuated on depression of the control bar Hia which is effective to rock a shaft 44 pivotally supported in the side frame plates 23a and 24a. The stem of bar liia has a bifurcated ear 330 embracing a pin 30| carried by an arm 362 fastened to the shaft 45. Shaft 44 'is secured to an arm 45 having a roller 48 thereon engaging a cam surface 41 formed on the slide 39 whereby to move the latter forwardly to cause engagement of the clutch in the same manner as depression of any of the control bars shown in Fig. 11. Control bars Ho and IE0, are also effective to actuate the slide 39 through suitable mechanism (not shown).

The accumulator, generally indicated at 56 (Fig. 2) is disclosed in detail in the aforementioned E. P. Drake application, S. N. 582,554, and comprises a series of accumulator gears 5|, one for each order, rotatably mounted on a shaft 52 independently of each other. The latter shaft is raised or lowered, along with a second shaft Bid, by mechanism not shown herein to mesh the accumulator gears 5| with rack gear sections 8311 or 84a of a drive rack |9a, depending on whether additive or subtractive operations are being performed. Each rack i8a is provided with a plurality of steps 19a cooperable with the key stems 29a of the aligned bank or amount keys. The racks |9a are yieldably driven forwardly by means (not shown) actuated by the shaft 5|a during each cycle of the machine and thereby advance the associated accumulator gears. Thus, during item entry operations, the racks advance the associated accumulator gears a number of increments equal to the value of the depressed amount key in the aligned orders.

The various amount keys are normally held in raised position by extension springs 32:; and the stem of each key has a combined camming lobe and latch shoulder 31a (Fig. 2A) thereon. When any amount key is depressed, the camming lobe 31a thereof engages a lock member 38a extending the length of the associated bank of keys and pivoted for outward swinging movement about a pair of coaxial pivot supports, one of which is shown at we. Thus, the associated lock memher is swung outwardly against the action of a tension spring 4 la to remove a zero stop 26 from a position blocking forward movement of the associated rack |9a and to release any previously depressed key in the same bank. At the bottom of its stroke, the upper surface of the cam lobe 31a of the depressed key stem is engaged and latched by the lock member 38a, thereby holding the key in depressed position.

The cash drawer II has a compartmented box 55 therein and adapted to receive bills of different denominations. A second compartmented coin box 55 for receiving coins of various denominations is removably supported in the drawer in front of the box 5d and rests upon shoulders 55 (Figs. 2 and 4) integral with the bottom and sides of the box, leaving a space 51 to store other items.

The drawer is supported for movement into and out of the casing i2 by pairs of spaced rollers 58 rotatably mounted, on the opposite sides of the drawer, on studs til fixed to brackets 5| suitably secured to the sides of the casing H2. The rollers 58 are embraced by channel guide members 62 suitably secured to opposite sides of the cash drawer and extending rearwardly thereof as shown in Fig. 3. Lateral guiding of the drawer is effected by a pair of rollers 63 (Figs. 2 and 4) rotatably mounted on studs 64, one secured to the cross brace 26 and the other secured to a bracket 65 suitably secured to the brace 26. The latter rollers are embraced by a guide channel 66 suitably secured to the under surface of the drawer The drawer Ii is normally urged toward its open position by a tension spring 6'1 (Figs. 2, 3, 6 and 7) secured at one end thereof to the cross brace 28 and at the other end thereof to the apex of a V-shaped floating cross piece 68. When the drawer is in its closed position as illustrated, the piece 68 fits within notches 69 formed in the downwardly extending flanges or" the channel member 68, thus urging the drawer forwardly. However, when the drawer is allowed to move to its open position, the piece 68 follows the cham nel member 66 until the wings thereof strike notches 10 (Fig. 2) formed in ears extending upwardly from a bracket suitably secured to the rear brace plate 26. The position of the piece 68 in this latter condition is illustrated by the dot and dash lines 68' in Fig. 7 and when the piece reaches this position it arrests the driving action of the spring, allowing the drawer to move forwardly under its own momentum until an inclined ear l3 (Fig. 3) on the upper outer edge of each side of the drawer strikes one of a pair of stop fingers M (Fig. 2) formed on opposite ends of a bail l 5 which is pivotally mounted on studs 16 extending inwardly from the sides of the easing l2. The bail i5 normally rests in the position illustrated by virtue of its own weight and thus prevents complete removal of the drawer. However, if it is desired to completely remove the drawer, the operator opens the drawer and then reaches inside sufficiently to rock the bail countor-clockwise to raise the fingers l4 above the path of movement of the lugs 13, allowing the drawer to be completely removed.

The cash drawer i is normally held in its illustrated closed position by a latch ll (Figs. 3, 5 and 6) which is U-shaped when viewed in Fig. 6 and is pivoted on a pin Ill supported by brackets 86 depending from the tray 2 l. The latch i7 is normally held in its illustrated latching position by a spring 8| extending between an ear 82 on the latch and a stud 83 carried by a camfollower 34.

4 The cam follower is also pivoted on the pin IT! and is provided with a roller I84 held in contact with a cam 85, secured on the shaft 51a, by a spring 86 tensioned between the stud 83 and an ear 8'! on the bracket ll. From the above it will be seen that in such cases where the latch TI is not locked, as will be described later, operation of the machine and consequent rotation of a cam 85 will rock the cam follower .84 and, through the spring 8I, rock the latch 11 to release the tip thereof from latching engagement with a strike edge 99 provided at the rear of the drawer.

.A rubber buffer 20! (Figs. 3 and 6) is attached to the bracket ll and is arranged to arrest the drawer II when it is closed.

As stated hereinbefore, the cash drawer latch is rendered ineffective to release the drawer when the machine is conditioned for certain types of operation and for this purpose, the latch is adapted to be blocked in its latching position by a depending lug H3 011 a cross slide 9|. The latter has elongated slots 92 embracin and slidable along guide studs 93 fixed to the tray 2 I. The slide BI is provided with a pin 94 extending upwardly through a slot 95 in the tray 2I and is fitted within a slot formed in a bellcrank 95 pivoted at 9! on the tray and connected by a pin and slot connection 98 to a control slide 99 (see also Figs. 4 and 9). The latter is provided with elongated guide slots I99 embracing guide studs IUI extending from the side of the tray 2i and is provided with an extension I63 to which is secured a stud I94 extending through an elongated slot H (Fig. l) in the top of the casing I2, terminating in the aforementioned knob I4. The slide 99 is centralized in each of the four positions corresponding to the lock, cash, add and open positions of the knob I4 by a centralizer I05 pivoted at I99 to the side of the tray 2| and urged downwardly by a spring I91 tensioned between the lever and suitable portion of the frame (not shown) to urge a roller I98 on the lever into engagement with one of four notches I99 formed on the slide. The slide 99 and, consequently, the cross slide 9| (Fig. 5) operatively connected thereto, is adapted to be locked in any of the above four :positions by the key controlled lock I5, the barrel of which is provided with a pivotal bearing portion HI} rotatably mounted in an aperture formed in the top of the casing I2. A lock arm H2 secured to the lock is arranged, when the lock is in its illustrated locking condition, to extend directly over the centralizer roller I98 (as shown in Fig. preventing raising of the detent in the slide 99 in which it is located.

The blocking lug I I3 (Figs. 3 and 6) on the cross slide 9| is so located that when theknoflo I4, and, consequently, the slide SM, is in its lock or illustrated cash positions, the lug will be located to the left (as viewed in Fig. 6) of a position overlying the drawer latch 11. However, upon movement of the knob into its add position, the lug H3 will overlie and (block the latch whereupon the latter will be blocked and the spring 8| (Fig. 3) will merely yield as the cam follower 82 is actuated as an incident to a machine operation.

A camming lug H4 (Figs. 5 and 6) is also formed on the cross slide .9! and is provided with a cam surface H5 which, when the knob I4 is moved to drawer position will engage a lug H6 on the latch Tl, thereby directly camming the latch upward into a drawer releasing position. It will thus be seen that the slide 9| selectively 8,. performs three functions; i. e., it is capable of directly moving the latch, blocking the latch from automatically releasing the drawer and rendering the latch effective to automatically release the drawer during a machine operation.

' The cross slide 9I also forms the means for locking and unlocking the rear cover I I3. Referring in particular to Figs. 1 and 3, the cover H3 is'provided with a pair of downwardly extending conical studs I I8 and I I9 at the upper end thereof which are normally located in apertures I29 formed in the upper cover 36 Ia. A bracket I2I is suitably secured to the cover H3 near the lower end thereof and has a pair of ears l22 extending therefrom and (provided with apertures I23 therein. Said ears I22 are arranged to extend through apertures I2 (Fig. 6) formed in the casing IZ-and the apertures I23 therein are adapted to receive locking fingers 222 formed on extensions of the cross slide 9 I.

Normally, when the cross slide (H is in its lock, cash and add positions the locking fingers 222 are inserted in the apertures I23, preventing removal of the cover H3. However, upon movement of the knob I4 to the open or drawer position the fingers 222 are removed from the apertures, permitting the latter to be removed from the machine. The cover H3 is yieldab-ly held in position even when the knob is moved to the open or drawer positions by cars I24 which yieldably engage finger I25 formed in the rear of the casing I2.

As mentioned hereinbefore, totalling or subtotalling of the accumulator is prevented when the machine is in its cash position and for this purpose the slide 99 (Fig. 9) is provided with a cam lobe I26 which, when the slide is moved into its cash position, as illustrated, engages and rocks a blocking lever I21 (see also Fig. 4), pivoted at 129 on a bracket I29 suitably fastened to the frame plate 24a. Thus, the lever I2! is moved against the action of a spring I30 tensioned between the lever and the frame into a position wherein a blocking shoulder I3I thereon underlies a projection I32 of a link 292a which is pivotally connected to a zero stop control lever 299a forming part of the totalling and sub-totalling control as disclosed completely in said R. E. Boyden application S. N. 582,553. The upper end of the link 292a. is pivotally connected to a cross link 293a intermediate its ends, which link is pivotally connected to the pins 232a underlying the stems of the total and sub-total bars I10. and I8a, respectively, and carried by the aforementioned links 23 30.. Blocking of the link 292a from depression will correspondingly, through the link 293a block effective depression of either of the control bars Ho and 18a and thus prevent control of the machine by these (bars. However, as the slide 99 is moved out of its cash position, the lobe I26 will allow the blocking lever I21 to rock sufnciently to move out of the path of the link 292a.

Describing now the means for preventing operation of the machine in response to depression of any of the motor operation control bars when the control knob I4 is moved to its lock position, a stud I33 (Figs. 9 and 11) extends from the slide 99 and underlies the irregular surface of a lever I34 pivotally supported by the side frame plate 24a. by a pivot stud I35. The lever I34 is connected by a pin and slot connection I36 to a slide I31 having elongated slots I31 therein guided vertically over frame studs I38 projecting from the frame plate 24a. When the 9 control slide 99 is in its illustrated "cash position, the stud I33 holds the lever I34 and slide I31 in their illustrated position against the action of a spring I40 tensioned between a stud on the slide and a portion of the frame to maintain a blocking ear I4I thereon above a nose I42 extending forwardly from the clutch control slide 36. However, when the knob I4 is moved to its lock position the stud I33 advances to its alternate position indicated by the dot and dash lines I33L, allowing the slide I31 to drop to a position wherein the ear I4I lies directly in front of the nose I42, thus blocking the slide 36 from forward movement in response to depression of any of the control bars and consequent advancement of the cam slide 39.

Means are provided to normally enforce depression of a designating key in each of the two leftmost amount key banks I6 and I! when the machine is operated as a cash register, i. e., with the knob I4 is in its cash position. This means, however, is rendered ineffective when the machine is operated in its add or open position and is also selectively adaptable to be arranged to enforce depression of one key 'only in either of the two banks I6 and Il if such control is desired.

Referring in particular to Figs. 2 and 11 to 14, inclusive, the aforementioned key latching members 38a associated with the two left hand banks of keys I6 and I! have suitably secured thereto identical extensions I43 and I44, respectively. The extension I43 normally lies against the outer end of a blocking lever I45 (see also Figs. 11 and 14) pivotally mounted on a stud I46 supported by a bracket I41 which is suitably fixed to the frame plate 24a. The lever I45 has a latching shoulder I43 which, when none of the keys in the lefthand bank I6 are depressed, lies in blocking relation with an ear I49 formed on the clutch control slide 36, preventing actuation thereof by depressing any of the motor control bars. A spring I50 is tensioned between an car on the lever I 45 and a stud II extending from a second lever I52 (see also Fig. 13), also pivoted on the stud I46, to normally hold the lever I45 in engagement with the stud I5I. In turn, an extension I51 of the lever I52 is normally held in engagement with the rear edge of the slide I31 by a spring I55 extending between an car on the lever and a part of the frame plate 24a.

The extension I44 attached to the member 33a associated with the next to the left hand bank of keys I! lies against a second latching lever I 53 also pivotally mounted on the stud I46. Lever I53 is provided with a blocking shoulder I54 identical with the shoulder I48 of lever I45 and thus also blocks movement of the slide 36 when no key in the bank I! is depressed. The lever I53 is normally held in contactwith the stud I5I on lever I52 by a spring I55 tensioned between the stud I5I and an car on lever I53.

Depression of keys in the banks It and I! will rock their associated latching members 33a outwardly to accordingly rock the respective blocking levers I45 and I53 clockwise (as viewed in Fig. 12) to remove their blocking shoulders I43 and I54 from blocking positions relative to the clutch control slide 36. It is therefore obvious that a key in each bank must be depressed in order to enable actuation of the slide 36.

Referring to Fig. 11, the slide I3! is provided with an inclined cam surface I6I which, when the machine is in its illustrated cash Position lies directly below the extension I51 of lever I52. However, when the knob I4 is moved to its add position the stud I33 of slide 99 moves to its dot-' dash position I33A, camming the lever I34 and thereby the slide I31 upward whereupon the cam surface I6I engages and cams the lever I52 clockwise (Fig. 12) to cause the stud I5I thereon to force both blocking levers I45 and I53 clock wise out of blocking relation with the slide 35. Movement of the knob I4 to the open or drawer positions does not materially effect the positioning of the lever I34 and slide I31 beyond that in which they are set when in add position. Thus, the levers I45 and I53 will remain out of blocking relation with the clutch control slide 35, thus obviating the necessity for depressing the designating keys during add and open operations of the machine.

From the foregoing description, it will be seen that a designating key in each of the two banks I6 and I! must be depressed in order to enable operation of the machine. However, the machine may be arranged to permit operation upon depression of only one key in either one of the banks I5 and IT. For this purpose, a hole 202 is formed in the lever I45 which, when the levers I45 and I53 are in their blocking positions shown in Fig. 12, is directly aligned with a second hole 203 formed in the lever I53. If it is desired to require depression of only one designating key in either of the banks I6 and I! a coupling pin 234 is fitted into the aligned holes 262 and 203, causing the levers I45 and I53 to move in unison,

- so that depression of a key in either bank IE or I! will effect unblocking of the clutch control slide 36 by both blocking levers.

The bank of designating keys I6 and I I have no item entry functions and thus need not be operatively associated with the accumulator in the usual manner. However, to prevent operation of the racks I9a associated with such orders during totalling and sub-totalling operations, accumulator gears 50 are associated with such racks but the tens transfer mechanism is renderedineffective to transfer units of ten from lower active orders to the two gears 50 associated with these two orders or to transfer units of ten between said two gears. In lieu of the zero stop extensions operatively connected with such gears as disclosed in the aforementioned E. P. Drake application S. N. 582,554, a star wheel I65 having ten equal spaces therein is integrally attached to each of the accumulator gears 50 in said two orders. During item entry operations the racks I9a associated with the banks of designating keys are driven forward in the usual manner, providing keys in such banks are depressed, until arrested by the depressed keys and such racks accordingly drive the associated accumulator gears 53 in the usual manner. However, during totalling and sub-totalling operations in which case all of the key lock members 38a are rocked to release their associated zero stops 42a from blocking relation with their racks, the shaftiila is rocked counterclockwise, moving aligned levers I56 associated with the designating key banks into locking engagement with the star wheels I 65, thus preventing a forward movement of the designating racks I3a during such totalling and sub-totalling oper ations.

The paper strip indicated by the dot-dash lines I3 of Fig. 3, upon which the various items and totals are printed, is fed from a supply roll indicated at I83, through an opening in the casing I2,

over a roller I8I, rotatably mounted on brackets I82 secured to the top of the casing I2, through an opening I83 formed in' the rear of the cover 36Ia, under a take-up roll I84, from whence it passes around the platen [2a. The strip I3 is then passed over the top surface of the cover 36I a, into an opening formed under the cover I I3, and thence onto the take-up roll I84.

The strip I3 is attached to a reel I85 (Fig. 8), forming the core of the roll I84, by inserting the leading edge of the strip into a longitudinally extending slot I86 formed in the reel. The core is provided with trunnion hearing portions I81 which are rotatably supported in bearing portions formed at the bottoms of open ended slots I88 formed inspa ed frame plates I89 and I99 suitbly secured n a manner not shown o he machine framework.

The platen I2a is automatically advanced, a predetermined interval during each machine operation and the take-up reel I85 is driven by the platen through a drive train comprising an endless flexible or spring belt IQI mounted over a pulley I92 attached to the platen and a second pulley I93 rotatably mounted on a frame stud I94. A gear I95 integral with the pulley I93 is arranged to mesh with a second gear I96 integrally attached to the reel I85, when the latter is in place.

The reel I85 is normally held at the ends of the bearing slots I83, as shown, with the gear I955 meshing with its drive gear I95, by retainers I91 yieldably engaging the trunnion portions I81 on opposite ends of thereel. Each retainer is pivoted on its associated frame plate I39 or-I'Sfl by a pivot stud I98 and is yieldably held in retaining position, as illustrated in Fig. 3, by a spring I99 ten sioned between the retainer and a frame stud 299. Each retainer engages the reel bearing through an inclined surface 2OI which yieldably holds the reel in its illustrated position. However, the reel may be forced outwardly along the slots I88 and thus removed when it is desired to remove or replace the roll of paper thereon. This arrangement facilitates removal and replacement of the roll of paper in the machine without connecting or disconnecting the usual coupling means between the same and the driving devices.

It will be noted that a line passing through the centers of the gears I95 and I96 extends at an angle of approximately 60 to the lengths of the slots I88. This arrangement of the gears results in less tendency of the teeth of the gears to clash when inserting the reel than would be the case if the line extending between the gear centers were parallel to the lengths of the slots I88. Also, with this particular arrangement of the gear centers, the resultant forces are such as to tend to hold the trunnion bearing portions against the forward ends of the slots I88.

A pawl 20.5, pivoted on the frame plate I90 at 205, is held in engagement with the teeth of gear I95 by a spring 206 tensioned between the pawl and a stud on the frame plate to prevent rotation of the gear I95 in a counter-clockwise direction.

Means are provided to prevent operation of the machine when the cash drawer is out of closed position and thus require closing of the drawer after each transaction. For this purpose, a blocking lever 2222 (Figs. 11 and 17) is pivoted on a frame stud 223 and is urged counter-clockwise by a spring 224 tensioned between the lever and a frame stud 225 to engage the lower end thereof with the rear of the cash drawer II.

The forwardly extending arm of lever 22 22 is 12 provided with a locking shoulder 226 which, when the drawer is in closed position (as illustrated in Fig. 17) is held below the stud 221 of clutch dog 58a. However, upon movement of the drawer II toward open position, the Spring 22 1 becomes effective to rock the lever 2222 clockwise and thereby position the locking shoulder in its alternate position, blocking clutch engaging movement of the clutch dog 58a.

If desired, the spring 224 may be disconnected from the lever 2222 whereby the latter will swing counter-clockwise of its own gravity to a position where it will be ineffective to prevent engagement of the clutcheven though the drawer I I is moved to open position.

Figs. 15 and L6 illustrate a transparent cover 28'! of plastic or the. like which is adaptedxto be locked in place over the opening 2E8 formed in the machine cover 36 Ia over the printing mechanism. This cover enables the printing mechanism to move into the opening 2&8 and also allows the operator to view the values printed on the tape I3, immediately after the printing operation, and at the same time prevents tampering with the printing mechanism while allowing ejection of the printed portion of the tape.

As disclosed in the aforementioned R. E. Boyden application, S. N. 582,553, the printing mechanism comprises a series of printer dials I 35a carried in side by side relation independent of each other on individual arms I36a mounted for limited rotatable movement on a printer control shaft I 31a. Springs I-38a tend to rockthe arms I361; clockwise to cause the dials to strike the paper tape I3 at the printing point P in'a printing operation. The shaft I'SIa is provided with diammetrically opposed grooves, the edges of which normally engage inwardly extending teeth formed on the levers I 36a to. hold thearms in their outer illustrated positions until the printing phase of the operating cycle, at which time the shaft is rocked clockwise to allow the printer arms I38a to follow and thus strike the tape I3.

The transparent cover 20] is provided with side flanges 209, the lower sections 289a of which extend into the opening 288. Flange sections 269a are provided with lips 21!] at their forward ends which are arranged to engage under the edge of the cover 36Ia at the forward end of the opening 208, thus locking the forward end of the cover 207 in place. Similar rearwardly extending lips 2H are formed on the flange sections 209a and such lips are arranged to be engaged by locking members 2I2 each formed of a thin resilient metal strip, to lock the cover in place. Each locking member is provided with a slot 2 slidably mounted on a guide stud 2H3 fixed to the cover 36Ia. The lower end of each member 2I2 has attached thereto a knob 2I6 extending through a slot 3H in the cover 36Ia whereby, when the rear cover H3 is removed, the respective member 2I2 may be drawn downward to release the upper forward end thereof from engagement with the lip 2I I. A spring 2H is tensioned between each stud 2I5 and the respective knob 216 to normally hold the strips in their upper rearward locking positions as illustrated. It should be noted that the rear end of each lock-member 2I2 springs upwardly so as to engage. at all times, the under surface of the cover 36Ia.

The rear edge of the cover 201 is provided with an opening 2I8 through which the paper tape I3 may extend. The upper edge of this opening is provided with a serrated edge 2l9 forming a severing or tear-off edge in the event it is desired to issue tape receipts. For example, it may be desired to use a carbon bi-pack tape formed of two strips wound together, the outer strip I313 being provided with a carbon transferring coating on the rear surface thereof so that it may pass through the opening 218 to be torn off when desired while the inner strip is passed over the upper surface of the cover 352a and onto the supply roll as shown in Fig. 3.

In order to prevent unauthorized tampering of the machine, as by placing a knife or other object through the opening 2 l8 to prevent printing operation of the dials la, a partition 22B is formed within the transparent cover 2t? and extends into the opening 298 to a point directly adjacent the path of the paper tape l3. lhe lower edge of the partition 22!! is formed into a series of teeth 22! form hooks so as to catch and block any paper, card or other sheet material which may be in serted through the opening 2|8.

It will be noted that the knobs 2 l 6 on the looking members 2 l 2 are located within the rear cover H3 and thus may not be manipulated to release the transparent cover 261 until the rear cover 3 i3 is removed in the manner described hereinhefore. Also lugs 23!] are secured to the inner surface of the rear cover to maintain the knobs 2 l 6 in looking position when the cover is in place.

,In order to magnify the image of the last value printed on the tape l3, the center section of the cover may be formed lenticular in shape, as by providing a convex lower contour indi cated by the dotted lines I222 so that the operator may see the printed value in magnified form.

Although we have described our invention in detail and have therefore used certain terms and languages herein, it is to be understood that the present disclosure is illustrative rather than restrictive, and that changes and modifications may be made-without departing from the spirit or scope of the invention as set forth in the claims appended hereto.

' Having thus described the invention, whatwe desire to secure by U. S. Latters Patent is:

1. A cash registering machine comprising the combination of a cash drawer casing, a cash drawer movable into and out of said casing, registering mechanism associated with said cash drawer, and carried by said casing, a cover for said registering mechanism, means for securing said cover to said casing, means accessible only from the interior of said casing and when said drawer is out of said casing for releasing said securing means, and means for selectively looking said drawer in said casing.

2. A cash registering machine comprising the combination of a cash drawer casing, a cash drawer movable into and out of said casing, control mechanism for said drawer mounted on said casing, a cover for said control mechanism, means for locking and unlocking said cover in position, said locking means being accessible only from the interior of said casing and when said drawer is out of said casing, and means for selectively locking said drawer in said casing.

- 3. In a motor driven cash registering machine having a register, differential actuators therefor, and depressible amount keys for controlling said actuators, the combination comprising drive means for said actuators including a clutch, a plurality of groups of designating keys, clutch engaging controls, a pair of blocking elements which curve rearward to normally blocking movement of said clutch controls, means actuated by a key in one of said groups upon depression thereof for moving one of said elements out of blocking position, means actuated by a key in another of said groups upon depression thereof for moving the other of said elements out of blocking position, and mechanism selectively settable into any of a plurality of positions and operable upon movement thereof into one of said positions for moving both of said blocking elements out of blocking position, said selectively settable mechanism being effec tive upn movement thereof into another of said positions for directly blocking said controls.

4. In a motor driven cash registering machine having a register, differential actuators therefor, and depressible amount keys for controlling said actuators, the combination comprising drive means for said actuators including a clutch, a group of designating keys, clutch engaging controls, a device normally preventing operation of said controls, means controlled by depression of any one of said designating keys for rendering said operation preventing device ineffective, a device manually settable into any of a plurality of positions, and mechanism responsive to movement of said manually settable device into one of said positions thereof for rendering said operation preventing device inefiective and responsive to movement of said manually settable device into another of said positions thereof for directly preventing operation of said controls and settable in to a third position for enabling operation of said controls and for rendering said operation preventing means effective 5. In a power driven cash registering machine having a cash drawer movable into and out of closed position, spring means for moving said drawer to open position and a latch for normally holding said drawer in closed position, the com .bination comprising power driven means including a yieldable device for moving said latch to drawer releasing position, a manually manipulatable device selectively settable into any of three positions, a blocking element set-table by said manipulatable device upon movement thereof into one of said positions to block said latch from movement, said element being settable by said manipulatable device upon movement thereof into a second one of said positions to enable movement of said latch by said power driven means, and a camming element operable by said manipulatable device and operable upon movement thereof into the third one of said positions to cam said latch into latch releasing position.

6. In a combined adding and cash registering machine having a register, differential actuating mechanism therefor, means including a totalling device for controlling said register and actuating mechanism to obtain totals from said register, a cash drawer movable into and out of closed posi-- tion, means for locking said drawer in closed position, and means for normally releasing said locking means as an incident to operation of said actuating mechanism; the combination comprising a manipulatable device selectively settable into either of two positions, means including a pair of blocking devices operable by said manipulatable device, one of said blocking devices being operable in response to movement of said manipulatable device into one of said positions to block said totalling device from operation and the other of said blocking devices being operable in response to movement of said manipulatable device '15 into the other of said positions to block said lock releasing means from operation.

7. In a combined adding and cashregistering machine having a register, differential actuating mechanism therefor, means including a totalling device for controlling said register and actuating mechanism to obtain totals from said register, a cash drawer movable into and out of closed position, means for locking said drawer in closed position, and means for normally releasing said locking means as an incident to operation of said actuating mechanism; the combination comprising a manipulatable device selectively settable into any of three positions, a blocking element operable by said manipulatable device and effective upon movement of said manipulatable device into one of said positions to block said totalling control device from operation, a second blocking element operable by said manipulatable device and effective upon movement of said manipulatable device into a second one of said positions to block said lock releasing means from operation, and a releasing element operable by said manipulatable device and operable upon movement of said manipulatable device into the third of said positions to directly release said locking means.

"8. In a combined adding and cash registering machine having a register, differential actuating mechanism therefor, means including a totalling device for controlling said register and actuating mechanism to obtain totals from said register, a cash drawer movable into and out of closed position, means for locking said drawer in closed position, and-means for normally releasing said locking means as an incident to operation of said actuating mechanism; the combination comprising a manipulatable device selectively settable into any of four positions, a blocking element carried by said device and effective upon movement of said manipulatable device into one of said positions to block said totalling control device from operation, a second blocking element carried by said device and effective upon movement of said manipulatable device into a second one of said positions to block said lock releasing means from operation, a releasing element carried by said manipulatable device and operable upon movement of said manipulatable device into a third one of said positions to directly release said locking means, and means operable by said manipulatable device upon movement thereof into the fourth one of said positions to prevent operation of said actuating mechanism.

9. In a power driven cash registering machine having a register, differential actuating mechanism therefor, a housing for at least part of said register and said actuating mechanism, a cash drawer casing, a cash drawer movable into and. out of said casing, spring means for moving said drawer to open position, and a latch for normally holding said drawer in closed position; the combination comprising means including a yieldable device operable as an incident to operation of said actuating mechanism for normally moving said latch to latch releasing position, a manually manipulatable device, a blocking element operable by said manipulatable device and adapted to block said latch from movement, a locking element operable by said manipulatable device and adapted to lock said housing in housing position, said 'manipulatable device being selectively settable into a first position to move said blocking element to block said latch from movement to latch releasing position and to move said locking element to lock said cover in covering position, said 16 manipulatable device being selectively settable into a second position to move said blocking element to enable said latch to move to latch releasing position and to move said locking element to unlock said housing.

10. In a power driven cash registering machine having a cash drawer movable into and out of closed positions, a register, differential actuating mechanism therefor, controls including a first manually depressible bar for controlling said actuating mechanism for entering amounts into said register, and controls including a second manually depressible bar for controlling said actuating mechanism to take totals from said register; the combination comprising drive means for said actuating mechanism including a clutch; means responsive to said drive means upon operation thereof for causing said drawer to move to said open position, a clutch control member arranged to be actuated by either of said bars upon depression thereof, a device for causing engagement of said clutch, means yieldably connecting said clutch control member with said clutch engaging device to normally transmit clutch engaging movement thereto, a selecting device selectively settable into either of two positions, means settable by said selecting device upon movement thereof into one of said positions to prevent said second depressible bar from actu ating said clutch control member and means settable by said selecting device upon movement thereof into the other of said positionsto prevent actuation of said clutch engaging device by said clutch control member.

11. In a power driven cash registering machine having a cash drawer movable into and out of closed position, a register, differential actuating mechanism therefor, controls including a .first manually depressible bar for controlling said actuating mechanism to enter amounts into said register; and controls including a second manually depressible bar for controlling said actuating mechanism to take totals from said register; the combination comprising drive means for said actuating mechanism including a clutch; means responsive to said drive means upon operation thereof for causing said drawer to move to open position, a clutch control member arranged to be actuated by either of said bars upon depression thereof, a device for causing engagement of said clutch, means yieldably connecting said clutch control member with said device to normally transmit clutch engaging movement thereto, a device normally blocking movement of said clutch engaging device, a group of designating keys, means responsive to depression of any one of said designating keys for disabling said blocking device from blocking said clutch engaging device, a selecting device selectively settable into either of two positions, a second blocking device settable by said selecting device upon movement thereof into one of said positions to prevent said second depressible bar from actuating said clutch control member, and means settable by said selecting device upon movement thereof into the other of said positions to prevent actuation of said clutch engaging device.

12. In a motor driven cash registering machine having a register, differential actuators therefor, and depressible amount keys for controlling said actuators, the combination comprising drive means for said actuators including a clutch, a. group of designating'keys, clutch engaging controls, a blocking element normally blocking move ment of said clutch controls, means actuated by REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,753,288 Fuller Apr. 8, .1930 1,795,115 Green Mar. 3. 1931 Number Number 20 387,973

18 Name Date Shipley Aug. 4, 1931 Dunning Oct. 6, 1981 Barrett Nov. 3, 1931 Lippert Dec. 15, 1931 Kropft Mar. 1, 1932 Green Aug. 23, 1932 Brand Aug. 30, 1932 Racz June 13, 1933 Butler June 20, 1933 Pasinski Feb. 9. 1937 Breitling Feb. 23, 1937 Clark Nov. 9, 1937 Breitling Dec. 7, 1937 Green Aug. 1, 1939 Showers Jan. 14, 1941 FOREIGN PATENTS Country Date Great Britain Feb. 16, 1933 

